Hair drier



J 17, 1930. D. c. MOSIER 1,764,462

HAIR DRIER Filed July 1, 1929 HW'H \" DOA/HAO c2 MOS/ER Inventor Atlorney Patented June 17, 1930 PATENT OFFICE DONALD C. MOSIER, OFSULT'AN, WASHINGTON HAIR Application filed July 1,

My present invention relates to improvements in hair driers of theelectrically oper ated type and adapted for use with usual domesticelectrically operated vacuum cleaners, the latter being operated in thisinstance to supply an air blast that is blown through the hair drierwhen the drier is connected therewith. The primary object of myinvention is the provision of a device of this character which is simplein construction and operation, inexpensive in cost of manufacture, whichmay readily be adapted for use with the vacuum cleaning device, andwhich is highly proficient in the performance of its functions.

The invention consists in certain novel combinations and arrangements ofparts as will hereinafter be more fully set forth and claimed. In theaccompanying drawings I have illustrated one complete example of thephysical embodiment of my invention wherein the parts are combined andarranged according to the best mode I have thus far devised for thepractical application of the principles of my invention. Figure 1 is aView in side elevation of the drier of my invention embodied as ahand-manipulated implement, parts being broken away "for convenience ofillustration. Figure 2 is a longitudinal sectional view of the drier.Figure 3 is a face view of the drier at its discharge end or nozzle.Figure 4 is an enlarged sectional detail view showing the manner ofattaching the air intake pipe or tubular handle to the drierhousing,'and the air control valve. Figure 5 is a transverse sectionalview at line 5-5 of Figure 1.

In the preferred form of my invention the implement is of such size andshape as to be readily manipulated, by the use of one hand so that theheated air currents emerging from the drier may be directed as desired;the electric heating element may be controlled; and the air blastpassing through the drier may also be controlled, with facility andconvenience. In carrying out my invention I utilize a preferablycylindrical casing which comprises an outer housing 1, an inner metalshell 2, and an intermediate heat insulated lining 3, the latter ofasbestos or other simi- DRIER 1929. Serial No. 375,035.

lar material. The inner shell forms a cover ing for the asbestos lining,and the shell is preferably highly polished to provide a surface thatwill not accumulate dust or other particles, and which may be readilycleaned when desired. The asbestos forms'an elfec tive insulationagainst transmission of heat from the interior of the shell or housing,and the inner shell protects the lining from air currents that wouldotherwise displace particles of dust from the lining.

The housing is open at both ends, and is provided with attaching rings 4and 5 crimped over its opposite edges. The rear crimped ring 4, carriesan open center head 6, which is retained within the ring by press fit,and about its open center the head is provided with a threaded bushing7, soldered to the head by use of its annular flange 8. This bushingforms the socket for an electric plug or connector 9, is threaded, andthe plug has the usual control button or switch button 10, and the leadwires 11 to the source of electrical energy. A heating element 12 isscrewed into the socket end of the plug 9, and as shown this electricheating element is of tapered formation, extends longitudinally in thehousing, and terminates some distance beyond the longitudinal center ofthe housing, with its larger round end toward the nozzle end of thehousing.

The nozzle for the housing comprises a ring 13 having an extendingflange14 that is retained by press fit inside the crimped ring 5, and thenozzle has a tapering body that projects into the discharge end of thehousing. This tapering body of the nozzle comprises tongues 15 that areformed by slits 16, said slits being of V-shape, and it will be apparentthat the presence of the heating elementand the presence of thefrusto-conical or tapered nozzle are instrumental in causing aircurrents introduced to the interior of the housing to take tortuouspassage around the heating element before the heated air currents emergefrom the drier. Thus the air currents are retarded in their passage fromthe drier sufficiently long to insure an effective heating of thecurrents from the element 12. The location of the larger end of thetapered element 12 insures a const-riction of the moving air currentstoward the center of the nozzle to form a single, central blast of hotair through the nozzle,

4 and the slits provide for auxiliary blasts of handle 17 that alsoforms the air inlet pipe for the housin and this handle is attached tothe housing y use of a flange 18 and bolts or screws 19. The inlet port20 between the tubular handle and the housing is located in position todirect the air currents to the end of the heating element 12 remote fromthe air nozzle to insure contact of the air with the entire area of theelement for effectively heating the air currents.

A butterfly valve 21 is located in the tubular handle and controlled bya handle 23 exterior to the handle 17 for controlling the passage of airto the housing, and this valve has a spring 22 that maintains the valvein any set position, the thumb being used to regulate the valve asdesired.

To filter the air passing through the bandle and prevent dust fromentering the housing-I utilize a reticulated, cone-shaped screen orfilter 24,-which is provided with an expansible ring 25, that is slippedinto the tubular handle 17' and is retained therein by friction betweenthe ring and the tubular handle." The filter or screen may be removed atintervals for cleaning purposes and is readily replaced or returned tooperative position.

The air blast may be secured from any suitable source, but the drier ispreferably equipped for use with the -air hose 26 from a vacuum cleanerin which the fan is used as a'blower. The hose is provided with a nipple27 and head 28, the former being slipped a into the open end of thetubular handle and there held by friction, while the head provides asecure closure for the end of the tubular handle against escape of aircurrents.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is 1. The combination with a cylindricalhousing, a heating element therein and a tubular handle forming an airinlet pipe, of a nozzle at the discharge end of the housing, said nozzlehaving a frusto-conical body projecting into the housing, and V-shapedslits in said body for the purpose described.

2. The combination, in an electrically heated drier having an air inletport at one end and an electric heating element mounted at said end andprojecting beyond the port toward the discharge end of the housing, anozzle-ring secured in the discharge end of the housing, saidnozzle-ring having an integral, inprojecting, frusto-conical body, andsaid body having V-slits therein to form tongues whereby a bafile wallis provided at the discharge end of the housing.

3. The combination with a housing comprising a cylinder, an innerpolished shell and an intermediate annular heat insulating lining, ofcrimped attaching rings at the ends of-the housing, a head secured atone end of the housing and a bushing in said head, a heating elementwithin the bushing and supported in said bushing, a discharge nozzlesupported in the ring at the discharge end of the housing, and saidnozzle having inwardly projecting tongues and slits, as described.

In testimony whereof I afiix my s1 nature.

DONALD G. M0 IER.

